Guillaume D.

data analyst/ scientist/ cro/ bi/ web performance

En télétravail depuis Paris

  • 48.85661400000001
  • 2.3522219000000177
Proposer un projet La mission ne démarrera que si vous acceptez le devis de Guillaume.
Proposer un projet La mission ne démarrera que si vous acceptez le devis de Guillaume.

Localisation et déplacement

Paris, France
Effectue ses missions majoritairement à distance


Durée de mission
  • ≤ 1 semaine
  • ≤ 1 mois
  • entre 1 et 3 mois
  • entre 3 et 6 mois
Secteur d'activité
  • Automobile
  • Agence & SSII
  • Conseil & audit
  • E-commerce
  • Luxe
+18 autres
Taille d'entreprise
  • 250 - 999 personnes
  • 1000 - 4999 personnes
  • ≥ 5000 personnes




Compétences (22)

Guillaume en quelques mots

Analytics & (Big) Data specialist, generating insights using Best In Class Methodologies & Tools
Founded, providing analytics services for smart decisions. Serving multiple well known clients in the web industry.
Previous experience: 7+ years of experience in working for leading companies in Web & Tech (Homeaway, Expedia Inc.) and Business Consulting (Bain & Company).
Hands on expertise in data mining for conversion rate optimization (CRO) in particular through Search & Ranking (aka Searchandizing), but also proven ability to deal with top management levels in order to focus data analysis on the right business priorities.
Proven ability to develop complex modeling and vizualization, specifically on R, and R Shiny applications.
Check out my website :


Portfolio uniquement accessible aux membres




Founder & CEO

Paris, France

juillet 2017 - Aujourd'hui

Created DataMa company, providing Analytics Services for smart decisions with your data.
Deep expertise in data analytics, in particular for online players: conversion rate optimization with plug & play modeling solutions to fasten your analytics capabilities
Check out
Preferred tools: R, R Shiny, SQL, Hive, Hadoop, Tableau, Excel, Google Platform (Google Analytics, Big Query, Data Studio, GSheets), Content Square


Voyage & tourisme

Analytics & Data Insights Manager

Paris, France

juin 2014 - juillet 2017

In charge of Sort Order Analytics & Data Insights, in the Business Intelligence team:
• Design the global sort order algorithm to be used on all the sites of Homeaway, resulting in significant improvement of conversion
• Monitor performance and identify improvements of sort algorithm through big data analysis
• Plan, design and read out results of A/B testing for sort optimization, in close collaboration with product manager
• Collaborate and guide Data Science to build customized machine learning models for sort (Supervised learning: GBDT, SVM)
• Define business requirements for sort developers
• Build ad-hoc strategic modeling for key business decisions on marketplace design, search & Geo optimization and conversion improvement
• Manage a team of 3+ Data Analysts (France & USA) – daily management, performance review, training & hiring, in Agile environment (Scrum on Jira)

Tools: SQL, Tableau, Google Analytics & Big Query, Excel, Hadoop, R, HUE, Hive, AWS & Athena, Datameer, Jira, MS Office & Google Suite

Bain & Company

Conseil & audit


Paris, France

mars 2010 - juin 2014

• In charge of data analysis and recomendation building
• Team work including interns/ junior management
• Performing clients interviews and presentation meetings

~15 cases of ~2 months for large groups directions:
• Practices: Business development, Business plan, Costs
reduction, Customer/Category/Footprint management,
• Industries: E-commerce, Retail, Consumer Goods, Telecom,
Media services, Financial services, Private Equity
• Offices: Paris, London, Bruxelles, Düsseldorf

Tools: Excel, Access, PowerPoint

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